Howard Stringer, the chief executive of Sony, said at a Berlin electronics show that the PlayStation Network has recovered from this spring's attack and 23-day outage by adding 3 million new users in the three months since.

"This year, we at Sony have been flooded, we've been flattened, we've been hacked, we've been singed," Stringer said a news conference that CNET described as "short but defiant."

"But the summer of our discontent is behind us," Stringer said, saying PSN is "more secure and better than ever."

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Hackers brought down PSN and Sony Online Entertainment's multiplayer offerings for 23 days beginning in mid-April, an attack that cost Sony millions in recovery costs and make-good gestures, and kept the PlayStation Store offline until E3 in June. As many as 70 million accounts were said to be affected in the data breach, one of the largest in history.